Keratectomy

Photorefractive Keratectomy (PRK)

Purpose: To correct refractive errors such as myopia (nearsightedness), hyperopia (farsightedness), and astigmatism.

Procedure:

• The outer layer of the cornea (epithelium) is removed.
• An excimer laser reshapes the underlying corneal tissue to correct the refractive error.
• The epithelium regenerates over a few days.

Indications: Suitable for patients with thin corneas or those who are not good candidates for LASIK.

Recovery:

• Vision improvement occurs gradually over days to weeks.
• Temporary discomfort, light sensitivity, and blurred vision are common during the initial healing phase.

Laser-Assisted Subepithelial Keratectomy (LASEK)

Purpose: Similar to PRK, LASEK corrects refractive errors but preserves the epithelial layer.

Procedure:

• The epithelium is loosened with an alcohol solution and moved aside.
• The cornea is reshaped with an excimer laser.
• The epithelium is repositioned over the treated area.

Indications: Beneficial for patients with thin or steep corneas who may not be suitable for LASIK.

Recovery:

• Similar to PRK, with gradual vision improvement and initial discomfort.

Superficial Keratectomy

Purpose: To remove superficial corneal scars, lesions, or opacities.

Procedure:

• The superficial layer of the cornea is carefully removed, typically with a blade or laser.
• This allows for clearer vision by eliminating surface irregularities.

Indications: Treats recurrent corneal erosions, corneal dystrophies, and superficial scars.

Recovery:

• Temporary discomfort and blurred vision during healing.
• Use of lubricating eye drops and sometimes bandage contact lenses to aid healing.

Automated Lamellar Therapeutic Keratectomy (ALTK)

Purpose: To treat various corneal conditions by removing damaged or diseased tissue.

Procedure:

• A microkeratome creates a thin flap of corneal tissue.
• The underlying corneal tissue is treated or reshaped.
• The flap is repositioned.

Indications: Used for therapeutic purposes rather than vision correction, such as removing corneal opacities or lesions.

Recovery:

• Depends on the extent of treatment and the individual’s healing response.

Considerations:

• To choose the best kind of surgery for their situation, keratectomy candidates should have a comprehensive eye exam and consultation.
• Talk to the surgeon about the risks and possible side effects, including infection, scarring, and vision abnormalities.
• The safety and efficacy of keratectomy procedures have been greatly enhanced by developments in laser technology and surgical techniques.
• Please ask any specific questions you may have about keratectomy or if you require more detailed information.